Sheet-metal roofing-plate.



H. E. MOOMAW.

SHEET METAL ROOFING PLATE.

APPLIOATION FILED JAN.15,1913.

Patented Sept. 2, 1913.

FFICE.

HENRY E. MOOMAW, OF CHATTANOOGA, TENNESSEE.

SHEET-METAL ROOFING-PLATE.

Specification of Letters Patent.

Patented Sept. 2, 1913.

Application filed January 15, 1913. Serial No. 742,157.

To all whom it mag concern Be it known that I, HENRY E. MOOMAW, a citizen of the United States of America, and 'a resident of Chattanooga, county of Hamilton, State of Tennessee, have invented certain new and useful Improvements in Sheet-Metal Roofing-Plates, of which the following is a full and clear specification, reference being bad to the accompanying drawings, in which Figure 1 is a perspective view of portions of a pair of roofing plates constructed and connected in accordaneewith my invention; Fig. 2 a vertical transverse sectional view showing the manner of interlocking adjacent plates; and Figs. 3, 4 and 5 detail perspective views showing the application of my invention to three ditl'erent designs of rooting plat'es.

This invention has relation to that type of sheet metal roofing covered by my former 'Patent No. 884,285, dated April 7, 1908, in

which is shown and covered a sheet metal roofing plate having an upstanding ridge parallel with and a short distance from one edge and another similarly shaped and dimensioned ridge parallel with and a short distance from its other edge, the part of the plate outside of this latter ridge serving as a nailing flange, a longitudinal pocket-like. channel being formed inside of and adjacent to this latter ridge and opening toward the ridge and being less in height than the same, whereby the longitudinal edges of a series of such plates may be overlapped and interlocked and the ridges of each pair of adjacent plates fit elosely upon each other their entire length to form a reinforced upstanding ridge. Since the grant of this patent this type of sheet metal roofing has been extensively manufactured and used and while it has proven of great practical and commercial value experience has shown that occasionally, by reason of the large sizes of the rooting sheets, high winds will get under the sheets and balloon them sufficiently to unlock the overlapping edge of the upper sheet and furthermore severe contractions of the sheet will occasionally pull the lock flange out of the lock fold and thus free the overlapping edge of the sheet.

My present improvement is designed to so construct the interlocking joint as to prevent this disconnect ion ot the plates, the construction being such that when the plates are once interlocked and iiailetl down it will be practically impossible to dislodge or disconnect them without first removing the nails in the nailing flanges. This improvement will be best understood if it be kept in mind that this type of roofing plates is made in sizes very much larger than the well known metal shingles on the market, this type of roofing plate being designed to take the place of these comparatively small shingles.

In the drawing, the numeral 2 indicates the main body of the sheet, 5 the top wall of the lock channel or fold, 7 the channel, which faces toward the ridge formed by bending up the walls 8 and 9, this ridge and the channel 7 extending the full length of the sheet,

and 10 the nailing flange. At the opposite edge of the sheet there is formed near its longitudinal edge a ridge having substan' tially the same shape as the ridge at the other edge of the sheet consistin of the two walls 11 and 12; and beyond this ridge the edge of the sheet forms a locking flange which is adapted to enter the channel 7. Each of'the sheets is constructed in this manner.

The walls 9 and 11 which form the walls of the interlocking ridges at the side opposite the ehannel or lock fold are inclined, while the walls 8 and 12 of the interlocking ridges are vertical or at right angles to the main body of the sheet. The wall 11 is higher than the wall 9 so that when the walls 9 and 11 are fitted together, as shown in Fig. 2, the wall 12 will stand at a distance from the wall 8, that is, nearer to the edge of the fold 5 than said wall 8. "It will be observed also that the lip or flange 13 is so formed as to stand away from not only the body of the shoot but also the top wall of the fold 5, the extreme edge of this llauge 1?) being bent upwardly so as to bear against the downwardly lacing wall of the lock channel. \Vith this construction it will be observed that should the overlapping sheet be contracted or pulled laterally by wind getting under it, the wall 12 will be pulled squarely against the wall 8 and will thus alt'ord a positive stop. It will also be ohscrved that the space between the walls 8 and 12 allows for a reasonable degree of expansion and contractitm without bringing any strain on the sheets and it will be further observed that the space under the lock llange 13 and the said space between the upwright walls prevents water seeping past the joint by capillary attraction, therethe extreme edge of the flange 13 converts said flange into a gutter to carry water away from the oint and will tend to keep it from touching the under surface of the lock fold 5 and thus keep the joint as dry as possible. Should water get past the edge of the flange 13 it will be carried ofi by the gutter formed by the wall 8 and the lock fold 5.

Having thus described my invention,what I claim as new and desire to secure by Letters Patent, is

1. A sheet metal roofing plate having a ridge parallel with and a short? distance from one edge, onewall of this ridge being vertical and the other inclined, another similarly shaped ridge parallel with and a short distance from its other edge, the part of the plate outside of this latter ridge serving as a nailing flange, and a longitudinal pocket like channel inside of and adjacent to this latter ridge and opening toward the same and being less in height than the same, the inclined wall of said first named ridge be? ing longer than the corresponding wall of the other ridge to extend above the apex of the same when adjacent plates are overlapped with their inclined walls in engagement with each other, thereby assuring a relatively wide space between the vertical wall of said ridges.

2. A sheet metal roofing plate having a ridge parallel with and a short distance from one edge, said edge being bent to form an edge channel, one wall of this ridge being vertical and the other inclined, a second similar shaped ridge parallel with and short distance from the other edge of the plate, said other edge adapted to serve as a nailin flange, and a longitudinal pocket inside 0 and adjacent to this latter ridge and opening toward the same, the inclined wall of said first named ridge being longer than the corresponding inclined wall of the other ridge to extend above the apex of the same when said inclined walls are in engagement with each other to form a relatively Wide space between the vertical walls of said ridges, said vertical walls of both ridges being approximately thesame length to posi-' tion the bottom of said edge channel above the bottom of said pocketwhen said in clined walls are in engagement, to form a relatively wide space beneath said edge channel and communicating with the space between the vertical walls. 7

In testimony whereof I hereunto affix my signature in the presence of two witnesses.

HENRY E. MOOMAW.

Witnesses:

J. P. CARROLL, W. H. H. Mrrcmnn. 

